Cleanup readme. (#99)

README.md

@@ -1,6 +1,6 @@
 # Fuel Specifications
 
-This repository specifies the Fuel v2 system, including the Fuel Virtual Machine (FuelVM, FVM), a next-generation verifiable virtual machine for [the Fuel v2 blockchain](https://github.com/FuelLabs).
+This repository specifies the Fuel protocol, including the Fuel Virtual Machine (FuelVM, FVM), a next-generation verifiable virtual machine for [the Fuel v2 blockchain](https://github.com/FuelLabs).
 
 - [Specification](#specification)
     - [Protocol](#protocol)
@@ -10,10 +10,12 @@ This repository specifies the Fuel v2 system, including the Fuel Virtual Machine
 
 ### Protocol
 
+1. [tx_format.md](./specs/protocol/tx_format.md): Fuel transaction format.
+1. [identifiers.md](./specs/protocol/identifiers.md): How to compute unique IDs for transactions and UTXOs.
 1. [tx_validity.md](./specs/protocol/tx_validity.md): Defines transaction validity rules.
-1. [tx_format.md](./specs/protocol/tx_format.md): Transaction format.
+1. [cryptographic_primitives](./specs/protocol/cryptographic_primitives.md): Cryptographic primitives used in Fuel.
 
 ### FuelVM
-The specification is laid out as follows:
-1. [main.md](./specs/vm/main.md): Entry point for reading the specification. Describes the FuelVM at a high level, from its architecture to how it is initialized.
+
+1. [main.md](./specs/vm/main.md): Describes the FuelVM at a high level, from its architecture to how it is initialized.
 1. [opcodes.md](./specs/vm/opcodes.md): Defines all opcodes available in the FuelVM.